Heat load surveys and system design in Westminster
In London, heat soaks into brick and concrete during the day and comes back out at night, which is when it is hardest to sleep. Every Westminster quote starts with a room-by-room survey rather than a guess from floor area.
No two rooms in Westminster gain or lose heat in quite the same way, which is exactly why rooms are measured before sizing. Westminster is part of our London coverage. Homes in SW1A, SW1E, SW1H, SW1P, SW1V and SW1W are all within our coverage.
Prices in Westminster
Heat load surveys and system design in Westminster typically come in at £495–£1,645 for a standalone design pack including VAT, based on London rates. That is above the UK middle, mainly because labour and access cost more in London. Larger homes, more zones and full drawing sets for a builder are what move a design pack towards the upper figure. As an example, the Design pack option (drawings and schedules for one home) would typically be £495–£1,045 here.
Home survey
Free with an installation quote.
Design pack
Drawings and schedules for one home.
Self-build pack
Whole-house design for a new build.
Planning and permissions
In England, most houses can have an outdoor unit under permitted development if it is no larger than 1.5 m³, meets the MCS 020(a) noise limit of 37 dB(A) at the nearest neighbour's window, and there are no more than two on a detached house or one on other houses. Listed buildings need consent.
The survey
A survey in Westminster usually takes one to two hours. We measure the rooms, check the walls and the consumer unit, agree the outdoor unit position with you and photograph the pipe routes. On a survey in Westminster the engineer looks at room size, glazing, the route for pipes and drains, the electrics and where the outdoor unit can sit quietly, then the written quote follows.
What is included
Here is what is included on every job in Westminster:
- Electrical load for your electrician
- Noise check to the nearest neighbour
- Equipment selection and outdoor unit sizing
- Pipe and drain routes
- Written proposal with options
Nearby
If you are just outside Westminster, we also work in Chelsea (2 miles), Battersea (2 miles) and Brixton (3 miles). See all services in Westminster or heat load surveys and system design across London.

